# Air Plan Approval; Louisiana; Nonattainment Plan for the Evangeline Parish 2010 Sulfur Dioxide Primary National Ambient Air Quality Standard Nonattainment Area
> **Rule** · Final rule. · Published 2025-07-10 · Effective 2025-08-11 · 90 FR 30591
## Document
- **Document number:** 2025-12801
- **Category:** air-emissions
- **Federal Register citation:** 90 FR 30591
- **CFR reference:** 40 CFR 52
- **Publication date:** 2025-07-10
- **Effective date:** 2025-08-11
- **State:** LA
- **EPA docket:** EPA-R06-OAR-2025-0173
## Abstract

The Environmental Protection Agency (EPA) is approving the State Implementation Plan (SIP) revision which Louisiana submitted to EPA on April 2, 2025, for attaining the Evangeline Parish 2010 1-hour sulfur dioxide (SO<INF>2</INF>) primary national ambient air quality standard (NAAQS) nonattainment area. EPA is finalizing approval of the following Clean Air Act (CAA) SIP elements: The attainment demonstration for the SO<INF>2</INF> NAAQS, which includes an Agreed Order on Consent (AOC) for the Cabot Corporation's Ville Platte Plant (Cabot) facility; the reasonable further progress (RFP) plan; the reasonably available control measures (RACM) and reasonably available control technology (RACT) demonstration; the emission inventories; and the contingency measures. The State has demonstrated that its current Nonattainment New Source Review (NNSR) program covers this NAAQS; therefore, no revision to the SIP is required for the NNSR element.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/07/10/2025-12801/air-plan-approval-louisiana-nonattainment-plan-for-the-evangeline-parish-2010-sulfur-dioxide-primary)
---
*AI Analytics · CC0 1.0*